Home / 1,985.48-2,739.95-1,089.22

Finding the Fourth Proportional to 1,985.48, 2,739.95 and 1,089.22

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Solution

The fourth proportional to 1,985.48, 2,739.95 and 1,089.22 is: 1,503.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.48 : 2,739.95 = 1,089.22 : x
  2. Step 2: Convert to fraction form
    1,985.48/2,739.95 = 1,089.22/x
  3. Step 3: Cross multiply
    1,985.48x = 2,739.95 × 1,089.22
  4. Step 4: Simplify right side
    1,985.48x = 2,984,389.19
  5. Step 5: Solve for x
    x = 2,984,389.19/1,985.48
  6. Step 6: Final answer
    x = 1,503.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.